DK178548B1 - An apparatus for raising a sea-going structure, such as a drilling platform, and provided with mutually parallel raising elements - Google Patents

An apparatus for raising a sea-going structure, such as a drilling platform, and provided with mutually parallel raising elements Download PDF

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Publication number
DK178548B1
DK178548B1 DKPA200201418A DKPA200201418A DK178548B1 DK 178548 B1 DK178548 B1 DK 178548B1 DK PA200201418 A DKPA200201418 A DK PA200201418A DK PA200201418 A DKPA200201418 A DK PA200201418A DK 178548 B1 DK178548 B1 DK 178548B1
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Denmark
Prior art keywords
lifting
lifting element
support point
float body
elements
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DKPA200201418A
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Danish (da)
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Andre Luur Jan Steenhuis
Martin Arie Schenkel
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Société D'exploitation Du Pieter Schelte N V
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/003—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for for transporting very large loads, e.g. offshore structure modules
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B2017/0039—Methods for placing the offshore structure
    • E02B2017/0047—Methods for placing the offshore structure using a barge
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B2017/0052—Removal or dismantling of offshore structures from their offshore location

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Abstract

En indretning til at løfte en havgående konstruktion såsom en borerig omfatter to eller flere flyderlegemer (l), et eller flere bjælkelignende løfteelementer (10), som er understøttet bevægeligt på et flyderlegeme og forløber parallelt eller praktisk taget parallelt med hinanden. Løfteelementet (10) eller løfteelementerne er understøttet på mindst to understøtningspunkter (11, 12) på flyderlegemet. Mindst et understøtningspunkt kan indstilles i højderetningen og løfteelementets (10) endedel, der er beliggende uden for flyderlegemet (1), har et trykpunkt (13), som er i kontakt med den konstruktion, der skal løftes, og dette således at den havgående konstruktion let kan forbindes med løfteelementets (10) ende, uden at denne konstruktion lider skade som følge af havets dønninger.A device for lifting an offshore structure such as a drilling rig comprises two or more float bodies (1), one or more beam-like lifting elements (10) which are supported movably on a float body and extend parallel or practically parallel to one another. The lifting element (10) or the lifting elements are supported on at least two supporting points (11, 12) on the float body. At least one support point can be set in the height direction and the end portion of the lifting element (10) located outside the float body (1) has a pressure point (13) which is in contact with the structure to be lifted, so that the sea-going structure can easily be connected to the end of the lifting element (10) without this construction suffering damage due to the swells of the sea.

Description

Opfindelsen angår en indretning til at løfte en havgående konstruktion såsom en borerig, hvilken indretning omfatter to eller flere flyderlegemer, som er placeret på hver sin side af den havgående konstruktion, hvor ét eller flere bjælkelignende løfteelementer er understøttet bevægeligt på hvert flyderlegeme og forløber parallelt eller praktisk taget parallelt med hinanden og er understøttet på mindst to understøtningspunkter på flyderlegemet.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a device for lifting an ocean-going structure such as a drilling rig, comprising two or more floating bodies located on either side of the sea-going structure, in which one or more beam-like lifting elements are supported movably on each floating body and extend parallel or practically parallel to each other and supported on at least two support points on the float body.

Der er tidligere blevet foreslået forskellige metoder til at løfte sådanne konstruktioner til søs, som det for eksempel er beskrevet i det amerikanske patentskrift nr. 5 829 919. Der gøres her brug af to flyderlegemer et på hver side af konstruktionen, som skal løftes, og løfteindretningerne er anbragt ragende ud langs de langsgående sider deraf. Ulempen ved en sådan udførelsesform er, at de i løfteorganerne indgående komponenter begrænser den frie bevægelse af konstruktionen, der skal løftes, i forhold til flyderlegemerne. Det skal her bemærkes, at havets dønninger nødvendiggør en kontinuerlig kompensation for flyderlegemernes relative bevægelser i forhold til den konstruktion, der skal løftes.Various methods have been proposed in the past for lifting such structures at sea, as described, for example, in U.S. Patent No. 5,829,919. Two floating bodies are used here, one on each side of the structure to be lifted, and the lifting devices are arranged protruding along the longitudinal sides thereof. The disadvantage of such an embodiment is that the components included in the lifting means limit the free movement of the structure to be lifted relative to the float bodies. It should be noted here that the swells of the sea necessitate continuous compensation for the relative movements of the floating bodies in relation to the structure to be lifted.

Et andet eksempel er FR 2514317 A1, der relaterer til en U-formet indretning af flydelegemer, der kan hæve og sænke deres højde i forhold til vandoverfladen. Støttebjælker er monteret på hvert parallelt ben af indretningen, hvor støttebjælkerne kan bevæges langs hvert ben, således at de kan strække sig ind i og væk fra indretningens centrum. Indretningen kan løfte og transportere store og tunge konstruktioner ved at placere konstruktionen i indretningens centrum, sænke højden af indretningen, bevæge støttebjælkerne, så de strækker sig ind i indretningens centrum og dermed er placeret under konstruktionen, og hæve højden af indretningen igen, således at konstruktionen løftes og dermed kan transporteres af indretningen.Another example is FR 2514317 A1, which relates to a U-shaped device of floating bodies which can raise and lower their height relative to the water surface. Support beams are mounted on each parallel leg of the device where the support beams can be moved along each leg so that they can extend into and away from the center of the device. The device can lift and transport large and heavy structures by placing the structure in the center of the device, lowering the height of the device, moving the support beams so that they extend into the center of the device and thus are located below the structure, and raising the height of the device again so that the structure can be lifted and thus transportable by the device.

Det er formålet med opfindelsen at overvinde de ovenfor angivne ulemper og at foreslå en løfteindretning, der muliggør en optimal bevægelsesfrihed for konstruktionen, som skal løftes, i forhold til flyderlegemerne, og som lever op til kravene til bevægelseskompensation.It is an object of the invention to overcome the above-mentioned drawbacks and to propose a lifting device which allows for optimum freedom of movement of the structure to be lifted relative to the float bodies and which meets the requirements for movement compensation.

Indretningen ifølge opfindelsen er ejendommelig ved, at det for hvert løfteelement gælder, at mindst ét understøtningspunkt kan indstilles i lodret og vandret retning, at i det mindste det andet understøtningspunkt tillader drejning af det bjælkelignende løfteelement i et vandret eller lodret plan, og at den frie endedel af løfteelementer har et trykpunkt, som kommer i kontakt med den konstruktion, der skal løftes.The device according to the invention is characterized in that for each lifting element, at least one support point can be set in the vertical and horizontal direction, that at least the second support point allows rotation of the beam-like lifting element in a horizontal or vertical plane and that the free end portion of lifting members has a pressure point which comes into contact with the structure to be lifted.

Som en følge af de bjælkelignende løfteelementer ifølge opfindelsen er det muligt for den frie endedel, der rager over den langsgående side af flyderlegemet, at blive udformet uden pladskrævende stænger eller cylindre, idet det bjælkelignende løfteelements understøtningspunkt, der kan forskydes i lodret og vandret retning, er placeret i en afstand fra løftepunktet således, at løfteelementerne kan bevæge sig lodret og vandret uafhængigt af hinanden, hvorved der tilvejebringes den optimale bevægelsesfrihed og bevægelseskompensation for konstruktionen, der skal løftes.As a result of the beam-like lifting members of the invention, the free end portion projecting over the longitudinal side of the float body can be formed without space-consuming rods or cylinders, the support-like point of the beam-like lifting element being displaceable in the vertical and horizontal directions. is positioned at a distance from the lifting point such that the lifting elements can move vertically and horizontally independently, thereby providing the optimal freedom of movement and movement compensation for the structure to be lifted.

Ifølge opfindelsen foreslås det yderligere, at forsyne det lodret og vandret bevægelige understøtningspunkt på flyderlegemet med mindst én cylinder fortrinsvis en hydraulikcylinder, til at styre den lodrette og vandrette forskydning af løfteelementet.According to the invention, it is further proposed to provide the vertically and horizontally movable support point on the float body with at least one cylinder, preferably a hydraulic cylinder, to control the vertical and horizontal displacement of the lifting element.

Det andet understøtningspunkt fungerer her mere eller mindre som vippepunkt, og dette understøtningspunkt fortrinsvis er placeret på oversiden af det bjælkelignende løfteelement.The second support point here acts more or less as a tipping point, and this support point is preferably located on the upper side of the beam-like lifting element.

Ifølge en anden udførelsesform er det ene understøtningspunkt forsynet med to pendularme til bevægelig ophængning i alle retninger af et løfteelement eller et par løfteelementer, der strækker sig parallelt ved siden af hinanden.According to another embodiment, one support point is provided with two pendulum arms for movable suspension in all directions of a lifting element or a pair of lifting elements extending parallel to one another.

Det er her muligt at udforme selve pendularmene som cylindre, eller at ophænge pendularmene i en separat vippearm, der er understøttet ved hjælp af en tilknyttet cylinder.Here it is possible to design the pendulum arms themselves as cylinders, or to hang the pendulum arms in a separate rocker arm supported by an associated cylinder.

Opfindelsen vil blive yderligere belyst i den følgende figurbeskrivelse af et antal udførelsesformer.The invention will be further elucidated in the following description of a number of embodiments.

På tegningen viser: fig. 1 en afbildning set fra siden af en havgående konstruktion, her en borerig, sammen med en indretning ifølge den kendte teknik til at løfte den øvre del af konstruktionen, fig. 2 og 3 henholdsvis en afbildning set ovenfra og en afbildning set fra siden af en første udførelsesform for indretningen ifølge opfindelsen, fig. 4 viser en afbildning set fra siden svarende til fig. 1 af en anden udførelsesform for indretningen ifølge opfindelsen, fig. 5 og 6 viser henholdsvis en afbildning set ovenfra og en lodret afbildning set forfra af en tredje udførelsesform ifølge opfindelsen, fig. 7 en perspektivisk afbildning af løftesiden af indretningen i fig. 6.In the drawing: FIG. 1 is a side view of a sea-going structure, here a drilling rig, together with a prior art device for lifting the upper part of the structure; FIG. 2 and 3 are a top plan view and a side view, respectively, of a first embodiment of the device according to the invention; 4 is a side view similar to FIG. 1 of another embodiment of the device according to the invention; FIG. Figures 5 and 6 show respectively a top view and a front elevational view of a third embodiment of the invention; 7 is a perspective view of the lift side of the device of FIG. 6th

Der henvises nu til fig. 1, hvor den kendte teknik er vist, og hvor løfteindretningen er anbragt på begge sider af en borerig, der består af et fundament J og en overbygning B, som er placeret derpå, hvilken overbygning B skal løftes op og så fjernes.Referring now to FIG. 1, where the prior art is shown and where the lifting device is arranged on both sides of a drilling rig consisting of a foundation J and a superstructure B which is placed thereon, which superstructure B is to be lifted and then removed.

Til dette formål tilvejebringer en adskillelse i de lodrette stolper C ved den øvre ende af fundamentet, når overbygningen B understøttes ved hjælp af indretningen ifølge den kendte teknik. Denne består af flyderlegemer 1 til placering på begge sider af fundamentet, en slædekonstruktion 2, der er anbragt forskydeligt i forhold til flyderlegemerne 1, og på hvis side, som vender mod fundamentet, der er anbragt en løfteindretning 4, som er forsynet med pendularme 5.To this end, a separation in the vertical posts C at the upper end of the foundation provides when the superstructure B is supported by the prior art device. This consists of float bodies 1 for positioning on both sides of the foundation, a sliding structure 2 which is displaceable relative to the float bodies 1, and on whose side, facing the foundation, is a lifting device 4 provided with pendulum arms 5. .

Det vil kunne forstås, at denne konstruktion er i fundamentets struktur, hvorved den relative bevægelsesfrihed mellem flyderlegemerne 1, slædekonstruktionen 2 og fundamentet hæmmes.It will be appreciated that this construction is in the structure of the foundation, thereby inhibiting the relative freedom of movement between the float bodies 1, the sleigh structure 2 and the foundation.

Fig. 2 og 3 viser en udførelsesform, hvorved et par bjælkelignende løfteelementer 10 er anbragt indbyrdes parallelt på hvert af flyderlegemerne 1.FIG. 2 and 3 show an embodiment whereby a pair of beam-like lifting elements 10 are arranged mutually parallel to each of the float bodies 1.

Antallet af par af bjælkelignende løfteelementer 10 er for eksempel fire pr. flyderlegeme, hvor dette antal afhænger af antallet af fundamentets lodrette stolper C.For example, the number of pairs of beam-like lifting elements 10 is four per second. float body, where this number depends on the number of the vertical pillars C.

Hvert bjælkelignende løfteelement 10 er understøttet ved hjælp af et flyderlegeme 1 ved henholdsvis det ene understøtningspunkt 11 og det andet understøtningspunkt 12. Enden af hvert bjælkelignende løfteelement 10, der rager uden for flyderlegemet 1, er forsynet med et trykpunkt 13, som anbringes under en knast N af en bøsning M, der er anbragt omkring fundamentets stolpe C, se fig. 7.Each beam-like lifting element 10 is supported by a float body 1 at the one support point 11 and the other support point 12. The end of each beam-like lifting element 10 protruding outside the float body 1 is provided with a pressure point 13 which is placed under a cam. N of a bushing M disposed around the foundation post C, see FIG. 7th

I udførelsesformen i fig. 2 og 3 er det ene understøtningspunkt forsynet med en hydraulikcylinder 14 til lodret bevægelse af understøtningspunktet 11 i henholdsvis en opadgående eller en nedadgående retning. Den nævnte cylinder er anbragt vipbart i forhold til det nævnte flyderelement 1 og det bjælkelignende element for at tillade vandret forskydning i et vandret plan til det nævnte understøtningspunkt. Det andet understøtningspunkt 12 er forsynet med en trækstang 15, der er monteret vipbart på både flyderlegemet 1 og det bjælkelignende løfteelement. Der er anbragt en hydraulikcylinder 16, som bevirker og styrer en vandret forskydning af løfteelementet 10, medens en tredje cylinder 17 set ovenfra er placeret til at bevirke eller styre løfteelementets sideværts bevægelsesfrihed. Trykpunktet 13 kan således bevæges i et tredimensionalt koordinatsystem i forhold til flyderelementet.In the embodiment of FIG. 2 and 3, one support point is provided with a hydraulic cylinder 14 for vertical movement of the support point 11 in an upward or downward direction, respectively. Said cylinder is tilted relative to said float element 1 and the beam-like element to allow horizontal displacement in a horizontal plane to said support point. The second support point 12 is provided with a drawbar 15 which is tiltably mounted on both the float body 1 and the beam-like lifting element. A hydraulic cylinder 16 is provided which causes and controls a horizontal displacement of the lift element 10, while a third cylinder 17 is viewed from above to effect or control the lateral freedom of movement of the lift element. Thus, the pressure point 13 can be moved in a three-dimensional coordinate system relative to the float element.

Da hvert bjælkelignende løfteelement 10 kan indstilles individuelt, er der mulighed for en høj grad af bevægelsesfrihed og fælles forskydning med havets dønninger.Since each beam-like lifting element 10 can be adjusted individually, a high degree of freedom of movement and joint displacement with the sea swells is possible.

Fig. 4 viser en udførelsesform, hvor det bjælkelignende løfteelement 10 er understøttet forskydeligt ved det ene understøtningspunkt 11 på en tværgående bjælke 20, der selv er understøttet på mere end én lodret virkende cylinder 14 til lodret indstilling deraf.FIG. 4 shows an embodiment in which the beam-like lifting element 10 is supported displaceably at one support point 11 on a transverse beam 20 which is itself supported on more than one vertical acting cylinder 14 for vertical adjustment thereof.

Det andet understøtningspunkt 12 er udformet med en buk 21, mod hvilken oversiden af det bjælkelignende løfteelement 10 støtter således, at en langsgående bevægelse, en rotation i et lodret eller vandret plan af løfteelementet 10 bliver mulig.The second support point 12 is formed with a bend 21 against which the upper side of the beam-like lifting element 10 supports such that a longitudinal movement, a rotation in a vertical or horizontal plane of the lifting element 10 becomes possible.

I udførelsesformen i fig. 5 og 6 er to bjælkelignende løfteelementer 10 i hvert tilfælde understøttet ved det ene understøtningspunkt 11 ved hjælp af en fælles vandret bjælke 20, som er ophængt i pendularme 25 således, at de kan vippe i alle retninger langs de tre rumlige hovedakser X, Y og Z, se fig. 7. Pendularmene 25 er selv ophængt til vipning i alle retninger på en vippearmskonstruktion 26, hvori der mellem den huslignende konstruktion 27, som er anbragt på flyderlegemet 1 og pendularmene 25, er placeret en cylinder 28 til at muliggøre bevægelse af pendularmene 25 i lodret retning og dermed af de bjælkelignende løfteelementer 10. Det andet understøtningspunkt for de bjælkelignende løfteelementer 10 er anbragt i den huslignende del 27 og kan udføres på den måde, som er vist i henholdsvis fig. 4 og fig. 2.In the embodiment of FIG. 5 and 6, two beam-like lifting elements 10 are supported in each case at one support point 11 by means of a common horizontal beam 20 suspended in pendulum arms 25 so that they can tilt in all directions along the three spatial main axes X, Y and Z, see FIG. 7. The pendulum arms 25 are themselves suspended for tilting in all directions on a rocker arm assembly 26, wherein between the housing-like structure 27 disposed on the float body 1 and the pendulum arms 25, a cylinder 28 is arranged to allow movement of the pendulum arms 25 in a vertical direction. and thus of the beam-like lifting elements 10. The second supporting point of the beam-like lifting elements 10 is arranged in the housing-like part 27 and can be carried out in the manner shown in FIG. 4 and FIG. 2nd

Det vil fremgå af det ovenstående, at hver at løfteelementernes 10 trykpunkter 13 har en bevægelsesfrihed i alle retninger, der er stort set uafhængig af hinanden. Det er derved muligt at hæve overbygningen af en borerig under meget sikre forhold uanset havets dønninger. Opfindelsen er ikke begrænset til den ovenfor beskrevne udførelsesform.It will be apparent from the foregoing that each of the pressure points 13 of the lifting elements 10 has a freedom of movement in all directions which are largely independent of each other. It is thus possible to raise the superstructure of a drilling rig in very safe conditions, regardless of the sea swells. The invention is not limited to the embodiment described above.

Claims (7)

1. Indretning til at løfte en havgående konstruktion såsom en borerig, hvilken indretning omfatter to eller flere flyderlegemer (1), som er placeret på hver sin side af den havgående konstruktion, hvor ét eller flere bjælkelignende løfteelementer (10) er understøttet bevægeligt på hvert flyderlegeme (1) og forløber parallelt eller praktisk taget parallelt med hinanden og er understøttet på mindst to understøtningspunkter (11, 12) på flyderlegemet (1), kendetegnet ved, at det for hvert løfteelement (10) gælder, at mindst ét understøtningspunkt (11, 12) kan indstilles i lodret og vandret retning, at i det mindste det andet understøtningspunkt (12) tillader drejning af det bjælkelignende løfteelement (10) i et vandret eller lodret plan, og at den frie endedel af løfteelementet (10) har et trykpunkt (13), som kommer i kontakt med den konstruktion, der skal løftes.A device for lifting an ocean-going structure such as a drilling rig, said device comprising two or more floating bodies (1) located on either side of the ocean-going structure, in which one or more beam-like lifting elements (10) are supported movably on each float body (1) and extends parallel or practically parallel to each other and is supported on at least two support points (11, 12) on the float body (1), characterized in that for each lifting element (10), at least one support point (11) , 12) can be adjusted in the vertical and horizontal directions, that at least the second support point (12) allows rotation of the beam-like lifting element (10) in a horizontal or vertical plane and that the free end part of the lifting element (10) has a pressure point (13), which comes into contact with the structure to be lifted. 2. Indretning ifølge krav 1, kendetegnet ved, at flyderlegemets (1) ene understøtningspunkt (11), som er placeret tæt på konstruktionen, der skal løftes, er forsynet med mindst én cylinder fortrinsvis en hydraulikcylinder (14) til lodret forskydning af løfteelementet (10).Device according to claim 1, characterized in that one supporting point (11) of the float body (1), which is located close to the structure to be lifted, is provided with at least one cylinder, preferably a hydraulic cylinder (14) for vertical displacement of the lifting element ( 10). 3. Indretning ifølge krav 2, kendetegnet ved, at en gruppe af løfteelementer (10) hørende til et flyderlegeme (1) er understøttet ved hjælp af en fælles tværbjælke (20), med hvilken cylinderen (14) eller cylindrene er i indgreb.Device according to claim 2, characterized in that a group of lifting elements (10) belonging to a float body (1) is supported by a common cross beam (20) with which the cylinder (14) or the cylinders are engaged. 4. Indretning ifølge krav 3, kendetegnet ved, at i det mindste det andet understøtningspunkt (12) tillader en langsgående forskydning af det bjælkelignende løfteelement (10).Device according to claim 3, characterized in that at least the second support point (12) allows a longitudinal displacement of the beam-like lifting element (10). 5. Indretning ifølge krav 4, kendetegnet ved, at det andet understøtningspunkt (12) er anbragt på oversiden af det bjælkelignende løfteelement (10).Device according to claim 4, characterized in that the second support point (12) is arranged on the upper side of the beam-like lifting element (10). 6. Indretning ifølge krav 2, kendetegnet ved, at det ene understøtningspunkt (11) er forsynet med to pendularme (25) til bevægelig ophængning i alle retninger af løfteelementet (10) eller et par løfteelementer (10), der strækker sig parallelt ved siden af hinanden.Device according to claim 2, characterized in that one support point (11) is provided with two pendulum arms (25) for movable suspension in all directions of the lifting element (10) or a pair of lifting elements (10) extending parallel to the side from eachother. 7. Indretning ifølge krav 6, kendetegnet ved, at pendularmen (25) eller pendularmene (25) er ophængt i en vippearm (26), hvilken vippearm (26) kan indstilles i det lodrette plan ved hjælp af cylinderen (28).Device according to claim 6, characterized in that the pendulum arm (25) or the pendulum arms (25) are suspended in a rocker arm (26), which rocker arm (26) can be adjusted in the vertical plane by the cylinder (28).
DKPA200201418A 2000-03-29 2002-09-25 An apparatus for raising a sea-going structure, such as a drilling platform, and provided with mutually parallel raising elements DK178548B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1014786A NL1014786C2 (en) 2000-03-29 2000-03-29 Device for lifting a seagoing construction such as a drilling platform, provided with lifting members running parallel to each other.
PCT/NL2001/000262 WO2001072582A1 (en) 2000-03-29 2001-03-29 Device for lifting a seagoing construction such as a drilling rig, provided with lifting members running mutually parallel

Publications (2)

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DK200201418A DK200201418A (en) 2002-11-26
DK178548B1 true DK178548B1 (en) 2016-06-13

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DKPA200201418A DK178548B1 (en) 2000-03-29 2002-09-25 An apparatus for raising a sea-going structure, such as a drilling platform, and provided with mutually parallel raising elements

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US (1) US6857821B2 (en)
AU (1) AU776698B2 (en)
BR (1) BR0109670B1 (en)
DK (1) DK178548B1 (en)
GB (1) GB2376211B (en)
NL (1) NL1014786C2 (en)
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BR0109670B1 (en) 2010-02-23
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US20040037650A1 (en) 2004-02-26
AU776698B2 (en) 2004-09-16
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AU4487301A (en) 2001-10-08
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US6857821B2 (en) 2005-02-22
NO334580B1 (en) 2014-04-14

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